Telecommunications – Radiotelephone system – Emergency or alarm communication
Reexamination Certificate
2006-07-18
2006-07-18
Trost, William (Department: 2683)
Telecommunications
Radiotelephone system
Emergency or alarm communication
C455S500000, C340S003200, C340S870030, C375S132000, C375S134000, C375S362000, C375S364000
Reexamination Certificate
active
07079831
ABSTRACT:
In a security system, a method and apparatus for two-way frequency hopping communications between the control panel and each peripheral device which maintains channel synchronization through the assignment of fixed beacon frequencies for the transmission of synchronizing data. The use of frequency hopping provides high immunity to jamming and interference, reduced occurrence of multi-path phenomena, and allows for transmissions at a much higher output power than conventional fixed-frequency communications, to thus increase the effective range of the peripheral devices while providing effective and reliable two-way communications between the control panel and the peripheral devices. The invention also provides a large number of channels, which allows for actuators such as sirens, strobes and line seizing devices to be wireless in addition to sensors. The invention provides a high immunity to signal jamming, interference from other wireless systems and miss-detection due to multi-path phenomena; reduces opportunities for collision between peripheral transmissions; and eliminates the redundant emission of peripheral transmissions to reduce RF traffic in the vicinity of the system and extend the life of batteries used in the peripheral devices.
REFERENCES:
patent: 4442527 (1984-04-01), Munday
patent: 4837823 (1989-06-01), Ham et al.
patent: 5509027 (1996-04-01), Vook et al.
patent: 5517187 (1996-05-01), Bruwer et al.
patent: 5533025 (1996-07-01), Fleek et al.
patent: 5737318 (1998-04-01), Melnik
patent: 5748100 (1998-05-01), Gutman et al.
patent: 5809013 (1998-09-01), Kackman
patent: 5963650 (1999-10-01), Simionescu et al.
patent: 6144693 (2000-11-01), Tabeta
patent: 6188715 (2001-02-01), Partyka
patent: 6294992 (2001-09-01), Addy et al.
patent: 6310549 (2001-10-01), Loftin et al.
patent: 6690276 (2004-02-01), Marino
patent: 6720861 (2004-04-01), Rodenbeck et al.
patent: 6727816 (2004-04-01), Helgeson
patent: 6728293 (2004-04-01), Partyka
patent: 6731223 (2004-05-01), Partyka
patent: 6737969 (2004-05-01), Carlson et al.
patent: 6831557 (2004-12-01), Hess
patent: 6859831 (2005-02-01), Gelvin et al.
patent: 6870875 (2005-03-01), Partyka
patent: 6901066 (2005-05-01), Helgeson
patent: 2001/0001234 (2001-05-01), Addy et al.
patent: 2001/0004375 (2001-06-01), Partyka
patent: WO00/74257 (2000-12-01), None
patent: WO00/75900 (2000-12-01), None
Kligman Joel
Lavee Doron
Schwartzman Yaakov
Dimock Stratton LLP
Ewart James D
Strategic Vista International Inc.
Trost William
Wilson Jenna L.
LandOfFree
Method and apparatus for two-way communications amongst a... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and apparatus for two-way communications amongst a..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for two-way communications amongst a... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3543049